Description of the first species of Fiorianteon Olmi (Hymenoptera, Dryinidae) from the Afrotropical region.

Fiorianteon sulcatumsp. n. is described from Fianarantsoa Province (Madagascar). It is the first species of Fiorianteon found in the Afrotropical region. The genus Fiorianteon can be distinguished from the closely related genus Conganteon by the distal part of the stigmal vein, which is as long as, or shorter than the proximal part of the stigmal vein (longer than the proximal part of the vein in Conganteon).